Emerson Process Management BETTIS G01 - Manual (Page 7)

Bettis P/N 124840E
Revision “B”
Page 3 of 46
SECTION 1 - INTRODUCTION
1.1 GENERAL SERVICE INFORMATION
1.1.1 This service procedure is offered as a guide to enable general maintenance to be performed
on Bettis G01XXX, G2XXX, G3XXX, G4XXX, G5XXX, G7XXX, G8XXX, G10XXX, G13XXX
Double Acting and Spring Return Series Single Power Module Pneumatic Actuators. This
procedure can also be used on Bettis GXX2XX Double Acting Series Twin Power Modules
Pneumatic Actuators.
1.1.2 Normal recommended service interval for this actuator series is five years.
NOTE: Storage time is counted as part of the service interval.
1.1.3 This procedure is applicable with the understanding that all electrical power and pneumatic
pressure has been removed from the actuator.
1.1.4 Remove all piping and mounted accessories that will interfere with the module(s) that are
to be worked on.
1.1.5 This procedure should only be implemented by a technically competent technician who
should take care to observe good workmanship practices.
1.1.6 Numbers in parentheses, ( ) indicate the bubble number (reference number) used on the
Bettis Assembly Drawing and Actuator Parts List.
1.1.7 This procedure is written using the stop screw side of the housing (1-10) as a reference
and this side will be considered the front side of the actuator. The housing cover (1-20) will
be the top of the actuator.
1.1.8 Actuator Module weights are listed in Section 6 Table 6.1.
1.1.9 When removing seals from seal grooves, use a commercial seal removing tool or a small
screwdriver with sharp corners rounded off.
1.1.10 Use a non-hardening thread sealant on all pipe threads.
CAUTION: Apply the thread sealant per the manufacture's instructions.
1.1.11 Bettis recommends that disassembly of the actuator modules should be done in a clean
area on a workbench.